Dear Wietse,
Am 20.06.2025 um 22:26 schrieb Wietse Venema via Postfix-users:
Christian H. Kuhn via Postfix-users:
I see only one inet_interfaces setting, and two differfent myhostname
settings. The Postfix SMTP client detects a mail loop when it
wants to connect to port 25 and:
- Either the server IP address matches the client's inet_interfaces
setting (in this case Postfix does not even attempt to connect).
This is it. But how can it be avoided in a multi instance set up, if all
instances are running on the same server and use the same localhost? No
IP but UNIX sockets?
- Or the server greets the client with the client's myhostname (in
this case the client logs that the server greets with its own hostname).
As the cited doc said, i used different hostnames for both port 25
instances.
TIA
QNo
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